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typedef asymbol

An asymbol has the form:

typedef struct symbol_cache_entry
       /* A pointer to the BFD which owns the symbol. This information
          is necessary so that a back end can work out what additional
          information (invisible to the application writer) is carried
          with the symbol.

          This field is *almost* redundant, since you can use section->owner
          instead, except that some symbols point to the global sections
          bfd_{abs,com,und}_section.  This could be fixed by making
          these globals be per-bfd (or per-target-flavor).  FIXME. */

  struct _bfd *the_bfd; /* Use bfd_asymbol_bfd(sym) to access this field. */

       /* The text of the symbol. The name is left alone, and not copied; the
          application may not alter it. */
  CONST char *name;

       /* The value of the symbol.  This really should be a union of a
          numeric value with a pointer, since some flags indicate that
          a pointer to another symbol is stored here.  */
  symvalue value;

       /* Attributes of a symbol: */

#define BSF_NO_FLAGS    0x00

       /* The symbol has local scope; static in C. The value
          is the offset into the section of the data. */
#define BSF_LOCAL      0x01

       /* The symbol has global scope; initialized data in C. The
          value is the offset into the section of the data. */
#define BSF_GLOBAL     0x02

       /* The symbol has global scope and is exported. The value is
          the offset into the section of the data. */
#define BSF_EXPORT     BSF_GLOBAL /* no real difference */

       /* A normal C symbol would be one of:
          BSF_GLOBAL */

       /* The symbol is a debugging record. The value has an arbitary
          meaning. */
#define BSF_DEBUGGING  0x08

       /* The symbol denotes a function entry point.  Used in ELF,
          perhaps others someday.  */
#define BSF_FUNCTION    0x10

       /* Used by the linker. */
#define BSF_KEEP        0x20
#define BSF_KEEP_G      0x40

       /* A weak global symbol, overridable without warnings by
          a regular global symbol of the same name.  */
#define BSF_WEAK        0x80

       /* This symbol was created to point to a section, e.g. ELF's
          STT_SECTION symbols.  */
#define BSF_SECTION_SYM 0x100

       /* The symbol used to be a common symbol, but now it is
          allocated. */
#define BSF_OLD_COMMON  0x200

       /* The default value for common data. */

       /* In some files the type of a symbol sometimes alters its
          location in an output file - ie in coff a ISFCN symbol
          which is also C_EXT symbol appears where it was
          declared and not at the end of a section.  This bit is set
          by the target BFD part to convey this information. */

#define BSF_NOT_AT_END    0x400

       /* Signal that the symbol is the label of constructor section. */
#define BSF_CONSTRUCTOR   0x800

       /* Signal that the symbol is a warning symbol.  The name is a
          warning.  The name of the next symbol is the one to warn about;
          if a reference is made to a symbol with the same name as the next
          symbol, a warning is issued by the linker. */
#define BSF_WARNING       0x1000

       /* Signal that the symbol is indirect.  This symbol is an indirect
          pointer to the symbol with the same name as the next symbol. */
#define BSF_INDIRECT      0x2000

       /* BSF_FILE marks symbols that contain a file name.  This is used
          for ELF STT_FILE symbols.  */
#define BSF_FILE          0x4000

       /* Symbol is from dynamic linking information.  */
#define BSF_DYNAMIC       0x8000

       /* The symbol denotes a data object.  Used in ELF, and perhaps
          others someday.  */
#define BSF_OBJECT        0x10000

  flagword flags;

       /* A pointer to the section to which this symbol is
          relative.  This will always be non NULL, there are special
          sections for undefined and absolute symbols.  */
  struct sec *section;

       /* Back end special data.  */
      PTR p;
      bfd_vma i;
    } udata;

} asymbol;

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